แก้ไขข้อมมูล MYSQL ครับ มันไม่ยอมอัพเดทให้ผู้รู้รบกวนหน่อยครับ

 <?php
						  $sql_1="select * from member where usermem = '$usermem'";
						  $db_query=mysql_db_query($db,$sql_1);
						  $result1=mysql_fetch_array($db_query);
						  $idx  =$result1['id'];
						  $fname  =$result1['fname'];
						  $name  =$result1['name'];
						  $birthday  =$result1['birthday'];
						  $sex  =$result1['sex'];
						  $address  =$result1['address'];
						  $road  =$result1['road'];
						  $district  =$result1['district'];
						  $city  =$result1['city'];
						  $province  =$result1['province'];
						  $country  =$result1['country'];
						  $zipcode  =$result1['zipcode'];
						  $phone  =$result1['phone'];
						  $fax  =$result1['fax'];
						  $mobile  =$result1['mobile'];
						  $email  =$result1['email'];
						  $usermem  =$result1['usermem'];
						  $passmem  =$result1['passmem'];
						?>
              </font> <table width="581" border="0" cellspacing="1" cellpadding="1">
                <form method="post" action="ProfileSave.php" name="webForm" onSubmit="return checkpost()">

 <?php
				$sql="select * from member where usermem='$usermem'";
						  $db_query=mysql_db_query($db,$sql);
						  $result=mysql_fetch_array($db_query);
						  $idx=$result[id];
						  $usename=$result[name];
						  $user_mem=$result[usermem];
						  $pass_mem=$result[passmem];
$showmember = "
<div align=center><font size=2 color=#ffffff><img src=images/user.gif width=25 height=15>ยินดีต้อนรับ : <font color=#FFFF00>$usename</font>
<br><font size=2 color=#ffffff>[</font> <a href=CheckMyOrder.php><font size=2 color=#ffffff>ประวัติสั่งซื้อสินค้า</font></a> <font size=2 color=#ffffff>] 
<br><font size=2 color=#ffffff>[</font> <a href=ChangePass.php><font size=2 color=#ffffff>เปลี่ยนรหัสผ่าน</font></a> <font size=2 color=#ffffff>] 
<br><font size=2 color=#ffffff>[</font> <a href=Profiles.php><font size=2 color=#ffffff>ข้อมูลส่วนตัว</font></a> <font size=2 color=#ffffff>] 
<br>[</font><a href=Logout.php><font size=2 color=#ffffff>ออกจากระบบ</font></a><font size=2 color=#ffffff>]</font> 
</div>
";
$myorder = "<a href=CheckMyOrder.php><img src=images/myorder.gif border=0><a>";
}
$birthday = "$_POST[dd1] $_POST[mm1] $_POST[yy1]";
$sql_mem = "update member set fname ='$_POST[fname]',name ='$_POST[name]',birthday ='$_POST[birthday]',address ='$_POST[address]',road ='$_POST[road]',district ='$_POST[district]',city ='$_POST[city]',province ='$_POST[province]',country ='$_POST[country]',zipcode ='$_POST[zipcode]',phone ='$_POST[phone]',fax ='$_POST[fax]',mobile ='$_POST[mobile]',email ='$_POST[email]' where usermem = '$_POST[usermem]'";
mysql_query($sql_mem);
echo $sql_mem;
mysql_query($sql_mem) or die(mysql_error());

?>